Mullin is one of two tribal members in Congress. He told The Hill newspaper that he had to get used to a new wardrobe since coming to Washington, D.C.

“I never owned a suit until after the election,” Mullin told the paper, which released its annual list on Tuesday. “I got married in jeans and boots. My wife and I, when we went to prom, I was in a pair of jeans.”

Mullin is serving his first term in Congress. He is running for re-election.